Update QoS documentation
Change-Id: I2d928e8f9a1fd824a8781e6506ccb0276bb91833
diff --git a/configuration/network.rst b/configuration/network.rst
index 6f6d0d0..44f4600 100644
--- a/configuration/network.rst
+++ b/configuration/network.rst
@@ -113,7 +113,7 @@
---------------------------------
Before describing the ONOS netcfg, it is worth nothing how we refer to ports for
-Tofino-based devices. Netcfg uses the format ``device:<name>/<port-number>``.
+Tofino-based devices. netcfg uses the format ``device:<name>/<port-number>``.
``<port-number>`` is a unique, arbitrary value that should be consistent
with the ``id`` field defined in Stratum chassis config.